YOU HAVE BEEN PRANKED MOTHER F Kers
7
The most recent significant California earthquake was the 1994 Northridge earthquake, magnitude 6.7, which killed around 60 people. The last earthquake above magnitude 7 in California was the 1999 Hector Mine earthquake, magnitude 7.1. There were no deaths due to it occurring in the middle of the Mojave desert.
Each increase by one magnitude corresponds to a release of energy 31.6 times that released by the lesser earthquake.Since 7 is 3 magnitudes higher than 4, the magnitude 4 earthquake has roughly 1/31554th the energy of the magnitude 7.Each increase by one magnitude corresponds to a release of shaking amplitude 10 times that released by the lesser earthquake.Since 7 is 3 magnitudes higher than 4, the magnitude 4 earthquake has 1/1000th the shaking amplitude of the magnitude 7.The amount of energy changes much more rapidly with magnitude than the amount of shaking amplitude. This is a commonly made error.
A low earthquake is 1-3 magnitude, a medium earthquake is 4-6 magnitude and a high earthquake is 7+ magnitude.No. A 7.0 magnitude quake would be considered a "major" quake.Here is the scale of earthquake magnitude classes:ClassMagnitudeGreat8 or moreMajor7 - 7.9Strong6 - 6.9Moderate5 - 5.9Light4 - 4.9Minor3 -3.9
Seismic energy increases by a factor of about 31.6 for each increase of magnitude, so a magnitude 3 earthquake has 31.6 times more energy released than a magnitude 2 earthquake.
The amplitude (height) of the seismic waves in a magnitude 8 earthquake will be ten times larger than in a magnitude 7 quake. This equates to approximately 31 times more energy.
Answer #1:by a magnitude of 2======================Answer #2:by a factor of 100
Earthquakes with a magnitude greater than or equal to 6 are termed strong earthquakes. 7 or larger are termed major earthquakes. Earthquakes greater than or equal to 8 are termed great earthquakes. The term "large" is not actually used.However based on the above it could be argued that any earthquake with a magnitude greater than 6 is a large earthquake.
That would be a "kind of strong" earthquake but 8+ is huge.
Earthquake strength is measured using a magnitude scale. For small to moderate strength Earthquakes (< magnitude 7) the Richter scale is used. For Earthquakes between 7 and 8 the body and surface magnitude scales are used and for earthquakes larger than 8, the moment magnitude scale is used.
Earthquake strength is measured using a magnitude scale. For small to moderate strength Earthquakes (< magnitude 7) the Richter scale is used. For Earthquakes between 7 and 8 the body and surface magnitude scales are used and for earthquakes larger than 8, the moment magnitude scale is used.
A "large" earthquake can be a major or great earthquake, both of which can cause serious damage to people, animal life, and buildings.A major earthquake is one of magnitude 7 - 7.9 which can cause serious damage. A great earthquake has a magnitude 8.0 or greater which can completely destroy communities near the epicenter.The 9.1 magnitude earthquake that hit Japan on March 11, 2011, is an example of a very large or great earthquake.